Envelope boxes are made with extra heavy board to meet U.S. Postal regulations.

Stocked in #326 brown kraft

STOCK NUMBER	SIZE	SUGGESTED USES
33M	3-1/2 X 2-1/2 X 1-1/4	Mailing Box
43M	4-1/2 X 3-1/2 X 1-3/4	Mailing Box
64M	6 X 4-1/2 X 2	Mailing Box
75M	10 X 7 X 2-3/4	Mailing Box
11M	10 X 7 X 2-3/4	Mailing Box